Manual Operation (Figure 4)
• Bleed Screw (external bleed): To open the valve, turn
the Bleed Screw counterclockwise one full turn or
until water begins discharging from the port.
Note: Removing the bleed screw is not required but
can be removed to help flush debris from the upper
diaphragm area.
To close the valve, turn the bleed screw clockwise
until it stops. Do not over-tighten!
• Bleed Handle (internal bleed): To open the valve, move the Bleed Handle counterclockwise to the
stop. To close the valve, move the handle clockwise until resistance is felt. Do not over-tighten!
• Flow Control Adjustment: With the valve operating, use a small screwdriver to turn the flow
control screw clockwise to decrease flow or counterclockwise to increase flow.
Note: The flow control screw requires approximately seven turns to adjust from maximum to
minimum flow.
Caution: Do not use the flow control to shut off the valve. Do not force the flow control
screw past the end of normal adjustment travel. Damage can occur.
The Toro Promise — Limited One-Year Warranty
The Toro Company and its affiliate, Toro Warranty Company, pursuant to an agreement between
them, jointly warrants, to the owner, each new piece of equipment against defects in material and
workmanship for the period of one year from the date of purchase.
Neither Toro nor Toro Warranty Company is liable for failure of products not manufactured by
them even though such products may be sold or used in conjunction with Toro products.
During such warranty period, we will repair or replace, at our option, any part found to be
defective.
Return the defective part to the place of purchase.
Our liability is limited solely to the replacement or repair of defective parts. There are no other
express warranties.
This warranty does not apply where equipment is used, or installation is performed, in any manner
contrary to Toro’s specifications and instructions, nor where equipment is altered or modified.
Neither Toro nor Toro Warranty Company is liable for indirect, incidental or consequential
damages in connection with the use of equipment, including but not limited to: vegetation loss,
the cost of substitute equipment or services required during periods of malfunction or resulting
non-use, property damage or personal injury resulting from installer’s negligence.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the
above limitation or exclusion may not apply to you.
All implied warranties, including those of merchantability and fitness for use, are limited to
the duration of this express warranty.
Some states do not allow limitations of how long an implied warranty lasts, so the above limitation
may not apply to you.
This warranty gives you specific legal rights and you may have other rights
which vary from state to state.
-
Installation Guide
-
The Toro 1" in-line electric valve is designed for use in an automatic
sprinkler system controlled by a 24 V a.c. sprinkler system timer.
The valve features manual flow control adjustable down to zero flow
and manual bleed control which enables the valve to be operated
without the use of the timer. The 53799 valve is designed for
poly pipe connections. This valve is generally installed below
grade, grouped with other valves in a manifold arrangement and
housed in a protective
valve box.
Important: This valve does not provide backflow
protection. A backflow prevention device installed
between the 1" in-line valve(s) and the water source point
of connection is required in most areas to prevent back-siphoning of contaminants through the
sprinkler system into the potable water supply. The Toro 1" Pressure Vacuum Breaker (PVB), model
number 53300, is specifically designed for this purpose. Before connecting your irrigation system to
the potable water supply, consult with your local water utility department for information regarding
backflow prevention requirements. Where local water pressure exceeds 70 psi, a pressure regulator
should be used. (See Uniform Plumbing Code, Sec. 1007 [b].) It is advisable to use a regulator with
any automatic valve to assure long life as well as uniform and controllable operation.
Valve Specifications:
Operating Pressure: 20–150 PSI (70 PSI maximum recommended)
Flow Range: 0.25–30 GPM
Solenoid:
24 V a.c., 60 Hz (nominal)
19 V a.c., 60 Hz (minimum)
Inrush: 0.40 amps, 9.6 VA @ 24 V a.c., 60 Hz
Holding: 0.20 amps, 4.8 VA @ 24 V a.c., 60 Hz
Friction Loss:
GPM Flow 0.25 5 10 15 20 30
PSI Loss 2.0 3.5 4.0 3.0 3.3 6.2
Installation Procedure
Note: To ensure ease of installation and optimum valve performance, please read through the
following instructions completely before starting the installation procedure.
Step 1-Route 1" schedule 40 PVC pipe from the backflow preventer or system
shut-off device to the valve location. Flush the supply line thoroughly!
Caution: Dirt, rocks and debris entering the valve can damage the valve and/or cause the
valve to malfunction.
Step 2-The instructions and illustrations on the next page provide the most commonly recommended
methods of installing in-line valves in a manifold arrangement.
Figure 4
Bleed
Screw
Bleed
Handle
Flow Control
Screw
© 2008 The Toro Company • Irrigation Division • Assembled in Mexico Form No. 373-0377 Rev. C
1" In-line Valve Model 53799
53799
RELEASED Version ©Toro 2008-2008
• Model 53799 Installation (Figure 1 & 2)
Step 1-Apply three complete wraps of PTFE tape to the threaded male ends of the valves.
Caution: Use only PTFE tape on threaded connections. Pipe dope and other types of pipe
thread sealants can damage plastic threads.
Step 2-Install a slip/thread adapter into threaded male end of the valve and tighten securely.
Step 3-Cut a 4" length of 1" schedule 40 PVC pipe for each valve.
Step 4-Using PVC primer and cement, assemble the valve and PVC components as shown, aligning
the tee fitting perpendicular to the valve. Repeat this procedure for each valve in the manifold.
Note: The last valve in the manifold can be connected with a 90° elbow instead of a tee. However,
if future expansion of the sprinkler system is expected, use the tee fitting and a 4" section of 1"
schedule 40 PVC pipe capped on the end. This enables the main line to be easily connected to
additional downstream valves.
Step 5-Slip a stainless steel hose clamp onto the poly pipe. Push the poly pipe onto the valve’s
barbed fitting covering all barbs. Position the clamp over the barb contact area and tighten securely.
Step 6-Using 4" sections of 1" schedule 40 PVC pipe, connect the valve assemblies together to
create the manifold, making sure the valves are aligned during assembly.
Step 7-Ensure the end of the supply line is dry and free of burrs. Cement the manifold to
the main line.
Step 8-Allow the cemented connections to cure for a minimum of one hour (or per the cement
manufacturer’s directions) before applying water pressure. If no leaks occur after pressurization,
begin connecting the sprinkler zone piping using 1 1/4" poly pipe.
Connecting the Valve Wires (Figure 3)
Step 1-Route 18 AWG direct-burial sprinkler
cable from the timer to the valves.
Step 2-Using wire splice connectors, attach
either wire from each valve solenoid to the white
cable wire. This wire is designated as the valve
“Common Wire.” Connect the remaining wire
from the solenoid to one of the color-coded
wires.
Important: All wire splices must be
insulated with grease caps or similar
waterproofing devices.
Step 3-At the timer, connect the control wires to
the numbered terminals in the desired operating
sequence and the valve common wire to the
common terminal.
Step 4-Using the timer’s manual control feature,
test the operation of each valve.
Cement Joints
1" Slip x Thread Adapter
1" Slip x Slip x
Slip PVC Tee
Valve Inlet
(PTFE-Taped threads)
1" Sch 40 PVC
4" Long
Figure 2
Figure 1
90° Elbow or Tee and Cap Plug
1" Sch 40 PVC
Water Supply Pipe
Valve Manifold Assembly
1 1/4" Poly Pipe
To Sprinklers
1" Sch 40 PVC
Hose Clamp
1 1/4" Polyethylene Pipe
(Poly Pipe)
Figure 3
Timer Connection
Common Wire
Grease Cap
RELEASED Version ©Toro 2008-2008
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